Sheet Metal Duct Fabrication

Sheet metal duct fabrication executed strictly to SMACNA Standards. Quoted within 24 Hours. Delivered 100% Complete & Zone-Labeled for Zero-Rework Field Installation.

Sheet Metal Duct Fabrication That Stops Schedule Delays

Your field crew time is too expensive to be spent waiting on metal or sorting through disorganized shipments. At ShincoFab we built our sheet metal duct fabrication process around one single metric. We focus entirely on keeping your installers installing.

Sheet metal engineers reviewing ductwork blueprints

Firm Itemized Quotes In 24 Hours

Stop waiting days for an estimate. We return firm, completely itemized quotes within 24 hours. You know your exact costs before you commit, keeping your budget locked in.
Shrink-wrapping metal components for secure delivery

Complete Zone Packaged Shipments

No partial deliveries. No missing fittings. Every order arrives 100% complete, palletized, shrink-wrapped, and clearly labeled by specific installation zone or floor. Your crew spends their $50/hour hanging duct, not acting as warehouse sorters.
HVAC detailing and clash detection review

Clash Detection For Zero Field Rework

Our internal detailers review your takeoffs to catch drawing interferences before the job ever hits our CNC plasma tables. If we find an engineering flaw we fix it on the screen to guarantee it fits exactly right in the field.

Live Fabrication Tracking Updates

Stop leaving angry voicemails. We provide automated milestone updates from the cutting table straight to the shipping dock. You get a firm delivery ETA so you can schedule your crane and crew with absolute certainty.

Fabrication Capabilities And Technical Specifications

We engineer and deliver custom duct fabrication to meet the most stringent mechanical specifications. From commercial HVAC ductwork fabrication using low pressure galvanized systems to heavy gauge continuously welded stainless exhaust. If you can draw it ShincoFab can build it.

Managed Metals And Materials

  • Galvanized Steel: G60 and G90 for standard commercial and industrial projects.
  • Stainless Steel: 304 and 316L for corrosive and hygienic environments.
  • Aluminum: lightweight and moisture resistant applications.
  • Black Iron And Carbon Steel: heavy duty grease and high heat exhaust.
  • Other specialty metals are available upon request.
Various metal coils for duct fabrication
Precision micrometer measuring sheet metal gauge

Thickness And Gauge Range

  • Starting from 24 gauge For light commercial HVAC.
  • Up to 3/16 inch plate For heavy industrial exhaust and breeching.

Duct Shapes And Configurations

  • Rectangular Ductwork: Precision rectangular duct fabrication that is CNC folded and formed.
  • Spiral Round Duct: High speed spiral duct manufacturing built for superior airflow dynamics and reduced leakage.
  • Flat Oval Duct: High capacity for restricted height spaces.
  • Wall Types: Single wall and double wall spiral duct configurations featuring complete thermal insulation for ducts.
Rectangular and spiral round ductwork shapes
Industrial ductwork flanged joint connections

Seams And Joint Connections

  • Transverse Duct Connection: Flanged joints for high-pressure structural integrity.
  • Slip And Drive: Fast-assembly joints for standard low-pressure runs.
  • Pittsburgh Seam: Machine formed and SMACNA approved longitudinal lock.
  • Continuously Welded: MIG and TIG joints for leak proof grease and fume exhaust.

Compliance And Industry Standards

All systems are fabricated in strict accordance with the following guidelines:
  • SMACNA Sheet Metal and Air Conditioning Contractors National Association.
  • ASHRAE Standard mechanical engineering requirements.
  • NFPA Fire safety requirements for grease and smoke ducting along with local building codes.
Precision measurement for HVAC duct quality compliance

Our Zero Defect Process Guarantees Field Accuracy

We know the nightmare. A misinterpreted drawing leads to a wrong transition piece that stalls your entire job site. We eliminate that risk through a rigid systematic fabrication and quality assurance workflow. Nothing is left to guesswork.

BIM modeling and digital takeoff for HVAC duct fabrication

Step 1: Digital Take Off And Detailing

  • The Process: We do not just start cutting metal based on rough sketches. We import your CAD Revit or PDF mechanical plans and translate them into exact highly detailed shop drawings.
  • The Guarantee: You review and approve the final shop drawings before a single sheet of metal is sheared. We catch the clashes on screen instead of on your job site.
Precision CNC plasma cutting for duct fabrication

Step 2: Automated Precision Fabrication

  • The Process: Approved designs are fed directly into our automated floor. We utilize Iowa Precision fully automated coil lines and Vicon cutting tables for highly accurate CNC plasma cutting duct fabrication. We also use Lockformer TDC roll formers to execute cuts seams and bends with absolute mechanical repeatability.
  • The Guarantee: By removing manual layout errors and relying entirely on machine driven fabrication we maintain strict dimensional tolerances of plus or minus 1/16 inch or 1.5 millimeters on all fittings. This ensures perfectly tight joints zero on site hammering and vastly faster assembly in the field.
Final QA inspection of fabricated ductwork

Step 3: Pre Shipment QA Check And Pressure Sealing

  • The Process: Before any duct gets palletized, it must pass our final inspection gate. Every fitting, straight run, and transition is physically measured against the approved shop drawing.
  • The Guarantee: Continuous welds are visually inspected for integrity. Seams and joints are properly sealed to meet the specified static pressure class. If it does not pass it does not ship.

Job Site Logistics For Faster Zero Confusion Installation

Fabricating the metal is only half the battle. Dumping an unorganized pile of ductwork on your job site destroys your labor budget. We manage the delivery logistics just as rigorously as the fabrication, saving your installation crew hours of sorting and guesswork.

Zone And Floor Labeling

We do not just load a truck. We organize it. Every pallet and fitting is explicitly labeled for its exact destination like Pallet 1 of 4 Level 3 East Wing. Your crane lifts the right material to the exact spot it is needed.
Ductwork components with zone-specific identification codes
Scanning a QR code for digital manifest access

QR Coded Packing Lists

Total transparency at the point of delivery. Foremen can scan the QR code on the shrink wrap to instantly see a digital itemized manifest of every piece on that specific pallet before they even cut the bands.

Phased Just In Time Shipping

A tight job site with no laydown area is not a problem. We coordinate phased deliveries that match your installation Gantt chart. You receive the ductwork exactly when your crew is ready to hang it to prevent site congestion and material damage.
HVAC technician hanging spiral ductwork on-site
Organized HVAC ductwork staged for job site installation

Comprehensive Job Site Coordination

From standard flatbed deliveries to coordinating complex crane-offloads at tight urban sites, our logistics team handles the transport details so your PMs can focus on the build.

Is Your Current Sheet Metal Ductwork Manufacturing Partner Eating Your Field Profits?

Late deliveries, missing fittings, and poorly detailed ductwork aren't just frustrating—they are destroying your labor budget. Stop accepting mediocrity as the industry standard. Send us your most difficult takeoff today. We’ll return an itemized quote in 24 hours and show you what **100% field-ready fabrication** actually looks like.

Frequently Asked Questions

We don’t hide behind sales pitches. You need to know if we fit your project’s logistics, timeline, and scope before you hand over your blueprints. Here are the straight answers to the most common questions our estimating desk gets.

Do you fabricate the entire system, or just the straight duct?
We fabricate 100% of the mechanical system. From straight rectangular and spiral runs to the most complex custom offsets, transitions, and welded grease ducts. You do not need to split your purchase orders between multiple shops. We are a single-source fabrication partner.
Job sites are unpredictable. If a forklift crushes a piece of duct or a field change requires an immediate offset we activate a priority rapid response protocol for our active partners. Call your dedicated project manager and we will fast track emergency fittings to keep your crew moving.

For the fastest and most accurate clash detection and quoting we prefer CAD files like DWG and DXF or Revit models. However our estimating team is fully equipped to perform detailed takeoffs directly from standard PDF mechanical blueprints.

No and that is strictly by design. We are purely a fabrication facility. We never bid on installation work which means we never compete with our own mechanical contractor customers. Our sole mission is to supply you with the highest quality metal so your field crews can be more profitable.

Get a Firm, Itemized Quote in 24 Hours

Stop waiting a week for numbers that hold up your bid. When you are ready to order sheet metal ducts simply upload your mechanical drawings specs or material takeoffs below. Our estimating team will review your requirements and return a highly detailed actionable quote by tomorrow. No guesswork and no hidden fees.

Whatsapp

+86 13392819510

Address

Building 1, No.8, Second Street, Huangjiang Town,
Dongguan City, Guangdong Province

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